# Answer to Question #165477 in Mechanical Engineering for Rodel

Question #165477

Ammola vapor is compressed in a closed system from 15 psia, 3 cu ft, to 150 psia, 0.4 cu ft. according to the relation pVn = constant. Assumin the vapor to be an ideal gas with the gas constant as 90.72 lbm-ft/lbf -°R and cv = 0.384 BTU/lbm - °R compute the heat transferred and the work.

1
2021-02-22T07:31:39-0500

As per the relation

take log both sides

0.875n=1

n=1.14

so here value of n which follows above equation is 1.14

Now, we know that work done for polytropic process is

from ideal gas equation we can find value of temperature as

=496 K,

Heat transfer as per first law of thermodynamics

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Assignment Expert
26.02.21, 15:00

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Rodel
23.02.21, 03:10

THANK YOU SO MUCH